A ceramic glaze, a ceramic product and a method for producing the same

Abstract

A ceramic glaze, a ceramic product and a preparation method thereof, wherein the ceramic glaze comprises the following components by weight: 76-89 parts of opacifying glaze, 10-21 parts of liquid phase regulator and 1-3 parts of rare earth oxide; the chemical composition of the opacifying glaze is as follows by weight percentage: SiO2 57.2-60.5%, Al2O3 9-12.8%, CaO 8-12.5%, MgO 5.5-9.0%, K2O 2.2-4.2%, Na2O 1.5-3.0%, ZrO2 6-11.0%, SrO 1.6-4.5%, BaO 2.1-4.3%. The glaze surface of the ceramic product prepared by using the ceramic glaze has long-lasting wear resistance, and the effect is long-term stable; the product has simple process and can be produced on a factory scale.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceramics, in particular to a ceramic glaze, a ceramic product and a preparation method thereof. BACKGROUND

[0002] Sanitary ceramics are almost indispensable in modern daily life. Due to frequent use, the glaze surface is required to have wear resistance and durability. At present, there are many studies on wear-resistant and durable sanitary ceramic glazes, but most of them adjust Al / Si to introduce corundum powder to improve the hardness of the glaze surface. For example, patents CN113185126B and CN110698067B.

[0003] The existing glaze produced in the prior art has the following problems: the content of aluminum and zinc in the glaze formula is increased to improve the wear resistance, but the gloss of the glaze surface is affected.

[0004] Therefore, in order to overcome the deficiencies of the prior art, there is an urgent need in the field to provide a ceramic glaze with obvious effect, simple process, factory scale production, and long-lasting wear resistance, and a preparation and application method thereof. SUMMARY

[0005] To solve the above technical problems, the present application provides a ceramic glaze, a ceramic product and a preparation method thereof, wherein the glaze surface of the ceramic product prepared by using the ceramic glaze has long-lasting wear resistance, and the effect is stable for a long time. The process of the product is simple and can be produced on a factory scale.

[0006] The first aspect of the present application provides a ceramic glaze, and the raw materials of the ceramic glaze include the following components by weight: opacifying glaze 76-89 parts, liquid phase regulator 10-21 parts, and rare earth oxide 1-3 parts.

[0007] In an exemplary embodiment, the chemical composition of the opacifying glaze is as follows by weight percentage: SiO2 57.2%-60.5%, Al2O3 9%-12.8%, CaO 8%-12.5%, MgO 5.5%-9.0%, K2O 2.2%-4.2%, Na2O 1.5%-3.0%, ZrO2 6%-11.0%, SrO 1.6%-4.5%, and BaO 2.1%-4.3%.

[0008] In an exemplary embodiment, the liquid phase regulator can be modified quartz powder, modified calcium carbonate or modified magnesium carbonate; preferably, the liquid phase regulator is modified quartz powder, wherein "modified" here refers to optimizing the particle size (D 50 ≤4.5 μm) of the liquid phase regulator to improve the melting characteristics, so as to improve the surface active hydroxyl group and promote the formation of high-temperature liquid phase.

[0009] In one exemplary embodiment, the rare earth oxide is selected from one or more of Y2O3, La2O3, Sc2O3, and SmO; wherein, the rare earth elements in the rare earth oxide are more reactive than ordinary elements, and become more reactive at higher temperatures. Therefore, when the ceramic glaze melts, the rare earth elements will preferentially move to the grain boundaries, slowing down the grain boundary movement and forcing the grains to tend to be fine and uniform.

[0010] In one exemplary embodiment, the raw materials of the ceramic glaze, by weight, include the following components: 76.00 parts of opaque glaze, 21.00 parts of liquid phase modifier, and 3.0 parts of rare earth oxides; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 9%, CaO 10.1%, MgO 5.5%, K2O 3.2%, Na2O 2.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%, and the rare earth oxides are a combination of the following weight ratio: Y2O3:Sc2O3 = 0.5:1.

[0011] In one exemplary embodiment, the raw materials of the ceramic glaze, by weight, include the following components: 79.25 parts of opaque glaze, 18.25 parts of liquid phase modifier, and 2.5 parts of rare earth oxides; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 8%, MgO 5.5%, K2O 2.2%, Na2O 1.6%, ZrO2 8%, SrO 3.6%, BaO 2.1%, and the rare earth oxides are a combination of the following weight ratio: Y2O3:Sc2O3 = 0.2:1.

[0012] In one exemplary embodiment, the raw materials of the ceramic glaze, by weight, include the following components: 84.75 parts of opaque glaze, 12.75 parts of liquid phase modifier, and 2.5 parts of rare earth oxides; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%, and the rare earth oxides are a combination of the following weight ratio: SmO:Sc2O3 = 0.5:1.

[0013] In one exemplary embodiment, the raw materials of the ceramic glaze, by weight, include the following components: 80.25 parts of opaque glaze, 18.25 parts of liquid phase modifier, and 1.5 parts of rare earth oxides; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%, and the rare earth oxides are a combination of the following weight ratio: Y2O3:SmO = 0.5:1.

[0014] In one exemplary embodiment, the raw materials of the ceramic glaze, by weight, include the following components: 89.00 parts of opaque glaze, 10.00 parts of liquid phase modifier, and 1.0 part of rare earth oxides; wherein, the chemical composition of the opaque glaze, by weight percentage, is: 60.5% SiO2, 12.8% Al2O3, 12.5% ​​CaO, 9.0% MgO, 4.2% K2O, 3.0% Na2O, 11.0% ZrO2, 4.5% SrO, and 4.3% BaO, and the rare earth oxides are a combination of the following weight ratio: Y2O3:SmO = 0.5:1.

[0015] In one exemplary embodiment, the melting temperature range of the ceramic glaze is 1190-1350°C.

[0016] The second aspect of this application provides a method for preparing the above-mentioned ceramic glaze, comprising: mixing raw material opaque glaze, rare earth oxide and liquid phase regulator with water in a weight ratio, followed by ball milling, sieving and aging, to obtain the ceramic glaze.

[0017] In one exemplary embodiment, the ball milling includes mixing raw materials, balls, and water in a weight ratio of 1:2:(0.4-0.5) and ball milling for 16-25 minutes to obtain a glaze slurry of the ceramic glaze.

[0018] In one exemplary embodiment, the sieving includes: after passing the glaze slurry through a 325-mesh sieve, the proportion of residue on the sieve should be less than or equal to 0.2%.

[0019] In one exemplary embodiment, the parameters of the glaze slurry after sieving are: flow rate 35-45s / 200ml, pH 6.5-7.6; where the flow rate here usually refers to the time it takes for 200ml of the glaze slurry to flow out from the 4mm aperture of the Mario Tube.

[0020] In one exemplary embodiment, the aging time is 24 hours.

[0021] A third aspect of this application provides a ceramic product comprising a green body and a glaze layer on the surface of the green body, wherein the glaze layer is a layer of ceramic glaze prepared by the above-described preparation method.

[0022] In one exemplary embodiment, the ceramic product is a building and sanitary ceramic product, optionally including a toilet, washbasin, urinal, floor tile, etc.

[0023] The fourth aspect of this application provides a method for preparing the above-mentioned ceramic product, comprising:

[0024] S1. Glazing:

[0025] The ceramic glaze is applied to the surface of the blank;

[0026] S2. Firing:

[0027] The ceramic product is obtained by drying, sintering, and cooling the glazed body.

[0028] In one exemplary embodiment, the glazing includes applying the ceramic glaze to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein the glaze layer thickness is 0.6-0.8 mm.

[0029] In one exemplary embodiment, the firing process includes: drying the glazed body and then firing it at 1230-1280°C under an oxidizing atmosphere for 0.5-2 hours to obtain the ceramic product.

[0030] Compared with related technologies, this application has the following advantages:

[0031] The ceramic glaze formula of this application uses rare earth oxides, and the liquid phase regulator in the formula advances the melting starting point of the ceramic glaze, thereby promoting an increase in the amount of liquid phase, self-leveling and filling the gaps between grains, making the gaps between grains more fully filled, increasing the density and micro-smoothness of the ceramic glaze layer, increasing the hardness, and improving the durability and wear resistance of the glaze surface; compared with the existing patent technology (i.e., patents CN113185126B and CN110698067B), the corresponding glaze surface of the ceramic product of this application still has a good gloss effect after undergoing a simulated daily extreme use of 3000 times of sand powder friction test.

[0032] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the solutions described in the description and the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0034] Figure 1 To show the microscopic glaze effect of the ceramic product after magnification 300 times before the wear resistance and durability test (Comparative Example 1).

[0035] Figure 2 This is a microscopic view of the glaze surface of a ceramic product magnified 300 times after the wear resistance and durability test, as shown in Comparative Example 1.

[0036] Figure 3 This is a microscopic view of the ceramic product's glaze surface magnified 300 times before the wear resistance and durability test in Example 2.

[0037] Figure 4 This is a microscopic view of the glaze surface of a ceramic product magnified 300 times after the wear resistance and durability test in Example 2.

[0038] Figure 5 The image shows the microscopic glaze effect of the ceramic product under magnification 300 times before the wear resistance and durability test in Example 3.

[0039] Figure 6 This is a microscopic view of the glaze surface of a ceramic product magnified 300 times after the wear resistance and durability test in Example 3.

[0040] Figure 7 This is an enlarged cross-sectional view of the glaze layer in Example 3. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of the present invention will be described in detail below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific examples, but these examples should not be construed as limiting the present invention.

[0043] The particle size requirement for the modified quartz used in this application is D. 50 ≤4.5μm, purchased from Fengyang Zhenxing Electronic Materials Co., Ltd.

[0044] In the following specific embodiments, operations without specified conditions are performed under standard conditions or conditions recommended by the manufacturer. Raw materials without specified manufacturers and specifications are all commercially available products.

[0045] Example 1

[0046] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 9%, CaO 10.1%, MgO 5.5%, K2O 3.2%, Na2O 2.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%.

[0047] The melting temperature of the ceramic glaze varies in the range of 1190-1350℃.

[0048] Preparation method:

[0049] 1) Preparation of ceramic glaze: Add emulsion glaze, rare earth oxide (weight ratio Y2O3:Sc2O3 = 0.5:1), modified quartz powder, ball milling tool and water to the ball milling jar according to the weight ratio of raw materials: ball: water = 1:2:0.45. Mix and ball mill for 23 minutes. After ball milling, the glaze slurry should pass through a 325-mesh sieve. The proportion of residue should be less than or equal to ≤0.2%. The flow rate is 38s / 200ml and the pH is 6.8.

[0050] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0051] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0052] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0053] Example 2

[0054] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 8%, MgO 5.5%, K2O 2.2%, Na2O 1.6%, ZrO2 8%, SrO 3.6%, BaO 2.1%.

[0055] The melting temperature of the ceramic glaze varies in the range of 1190-1350℃.

[0056] Preparation method:

[0057] 1) Preparation of ceramic glaze: Add emulsion glaze, rare earth oxide (Y2O3:Sc2O3 = 0.2:1), modified quartz powder, ball mill, and water to a ball mill jar according to the weight ratio of raw materials:ball:water = 1:2:0.45, mix and ball mill for 23 minutes. After ball milling, the glaze slurry should pass through a 325-mesh sieve, and the proportion of residue should be less than or equal to ≤0.2%. The flow rate is 40s / 200ml, and the pH is 7.3.

[0058] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0059] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0060] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0061] Example 3

[0062] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%.

[0063] The melting temperature of the ceramic glaze varies in the range of 1190-1350℃.

[0064] Preparation method:

[0065] 1) Preparation of ceramic glaze: Add emulsion glaze, rare earth oxide (weight ratio SmO∶Sc2O3=0.5∶1), modified quartz powder, ball mill and water to the ball mill jar according to the weight ratio of raw materials: ball: water = 1∶2∶0.45, mix and ball mill for 23 minutes. After ball milling, the glaze slurry is passed through a 325 mesh sieve. The proportion of residue on the sieve should be less than or equal to ≤0.2%. The flow rate is 37s / 200ml and the pH is 6.9.

[0066] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0067] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0068] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0069] Example 4

[0070] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%.

[0071] The melting temperature of the ceramic glaze varies in the range of 1190-1350℃.

[0072] Preparation method:

[0073] 1) Preparation of ceramic glaze: Add emulsion glaze, rare earth oxide (Y2O3:SmO = 0.5:1), modified quartz powder, ball mill, and water to a ball mill jar according to the weight ratio of raw materials:ball:water = 1:2:0.45, mix and ball mill for 23 minutes. After ball milling, the glaze slurry should pass through a 325-mesh sieve, and the proportion of residue should be less than or equal to ≤0.2%. The flow rate is 45s / 200ml, and the pH is 7.5.

[0074] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0075] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0076] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0077] Example 5

[0078] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 60.5%, Al2O3 12.8%, CaO 12.5%, MgO 9.0%, K2O 4.2%, Na2O 3.0%, ZrO2 11.0%, SrO 4.5%, BaO 4.3%.

[0079] The melting temperature of the ceramic glaze varies in the range of 1190-1290℃.

[0080] Preparation method:

[0081] 1) Preparation of ceramic glaze: Add emulsion glaze, rare earth oxide (Y2O3:SmO = 0.5:1), modified quartz powder, ball milling tool and water to the ball milling jar according to the weight ratio of raw materials:ball:water = 1:2:0.45, mix and ball mill for 23 minutes. After ball milling, the glaze slurry is passed through a 325 mesh sieve. The proportion of residue on the sieve should be less than or equal to ≤0.2%. The flow rate is 37s / 200ml and the pH is 6.6.

[0082] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0083] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0084] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0085] Comparative Example 1

[0086] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%.

[0087] The melting temperature of the ceramic glaze varies within the range of 1190-1290℃.

[0088] Preparation method:

[0089] 1) Preparation of ceramic glaze: Add the opaque glaze, grinding ball and water to the ball mill jar according to the weight ratio of raw material: ball: water = 1:2:0.45 and mix and ball mill for 20 minutes. After ball milling, the glaze slurry should pass through a 325 mesh sieve and the proportion of residue should be less than or equal to ≤0.2%. The flow rate is 45s / 200ml and the pH is 7.2.

[0090] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0091] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0092] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0093] Comparative Example 2

[0094] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%.

[0095] The melting temperature of the ceramic glaze varies within the range of 1190-1290℃.

[0096] Preparation method:

[0097] 1) Preparation of ceramic glaze: Add opaque glaze, ordinary 200-mesh quartz powder, grinding ball and water to the ball mill jar according to the weight ratio of raw materials: ball: water = 1:2:0.45, mix and ball mill for 23 minutes. After ball milling, the glaze slurry should pass through a 325-mesh sieve and the proportion of residue should be less than or equal to ≤0.2%. The flow rate is 40s / 200ml and the pH is 6.9.

[0098] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0099] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0100] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0101] Comparative Example 3

[0102] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%.

[0103] The melting temperature of the ceramic glaze varies within the range of 1190-1290℃.

[0104] Preparation method:

[0105] 1) Preparation of ceramic glaze: Add emulsion glaze, other rare earth oxides (Lu2O3), milling balls and water to a ball mill jar according to the weight ratio of raw materials: balls: water = 1:2:0.45, mix and ball mill for 21 minutes. After ball milling, the glaze slurry is passed through a 325-mesh sieve. The proportion of residue on the sieve should be less than or equal to ≤0.2%. The flow rate is 39s / 200ml, and the pH is 7.0.

[0106] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0107] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring or spraying; wherein the thickness of the glaze layer after glazing is 0.6mm.

[0108] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0109] Comparative Example 4

[0110] The raw material composition of the ceramic glaze is shown in Table 1 below, where the formula in Table 1 is the weight part of each substance; wherein, the chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%, Al2O3 11.1%, CaO 10.1%, MgO 5.5%, K2O 2.2%, Na2O 1.5%, ZrO2 6%, SrO 3.6%, BaO 2.1%.

[0111] The melting temperature of the ceramic glaze varies within the range of 1190-1290℃.

[0112] Preparation method:

[0113] 1) Preparation of ceramic glaze: Add emulsion glaze, other rare earth oxides (Lu2O3), modified quartz powder, ball milling pellets and water to a ball milling jar according to the weight ratio of raw materials: ball: water = 1:2:0.45, mix and ball mill for 23 minutes. After ball milling, the glaze slurry should pass through a 325-mesh sieve and the proportion of residue should be less than or equal to ≤0.2%. The flow rate is 41s / 200ml and the pH is 7.1.

[0114] The sieved ceramic glaze is aged for 24 hours to obtain the ceramic glaze.

[0115] 2) Glazing: The ceramic glaze is applied to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein, the thickness of the glaze layer after glazing is 0.6mm;

[0116] 3) Firing: After drying the glazed body, it is fired in a tunnel kiln under an oxidizing atmosphere at a firing temperature of 1238℃ and a holding time of 2h to obtain the ceramic product.

[0117] Table 1. Raw material composition of each embodiment and comparative example.

[0118]

[0119] Experimental Example

[0120] 1) The glaze surface of the ceramic products prepared in the examples and comparative examples was tested for wear resistance and durability by repeatedly rubbing it with a 500g load in feldspar powder slurry using a multi-functional alcohol friction machine. The test results are shown in [link to test results]. Figures 1-7 And Table 2.

[0121] 2) The hardness of the glaze surface of the ceramic products prepared in the examples and comparative examples was tested using a microhardness tester. The obtained glaze surface parameters are shown in Table 2.

[0122] 3) The surface roughness of the ceramic products prepared in the examples and comparative examples was tested using a surface roughness tester. The obtained surface roughness parameters are shown in Table 2.

[0123] Table 2

[0124]

[0125] according to Figures 1-7 As shown in Table 2, compared with the comparative example, the ceramic products in this application have significantly fewer pores in the glaze layer, and under the same test conditions, the scratches are significantly lighter, resulting in better wear resistance and durability.

[0126] This application describes several embodiments, but these descriptions are exemplary and not restrictive, and it will be apparent to those skilled in the art that there are many more embodiments and implementations within the scope of the embodiments described herein.

Claims

1. A ceramic glaze, wherein the raw materials of the ceramic glaze, by weight, comprise the following components: 76-89 parts of opaque glaze, 10-21 parts of liquid phase modifier, and 1-3 parts of rare earth oxide; wherein, The chemical composition of the opaque glaze, by weight percentage, is: SiO2 57.2%-60.5%, Al2O3 9%-12.8%, CaO 8%-12.5%, MgO 5.5%-9.0%, K2O 2.2%-4.2%, Na2O 1.5%-3.0%, ZrO2 6%-11.0%, SrO 1.6%-4.5%, BaO 2.1%-4.3%; The rare earth oxides are selected from one or more of Y2O3, La2O3, Sc2O3 and SmO.

2. The ceramic glaze according to claim 1, wherein, The liquid phase modifier is modified quartz powder, modified calcium carbonate, or modified magnesium carbonate.

3. The ceramic glaze according to claim 2, wherein, The liquid phase conditioner is modified quartz powder.

4. The ceramic glaze according to any one of claims 1 to 3, wherein, The melting temperature range of the ceramic glaze is 1190-1350℃.

5. A method for preparing a ceramic glaze according to any one of claims 1 to 4, comprising: The raw materials, including opaque glaze, rare earth oxides, and liquid phase modifier, are mixed with water according to a weight ratio, then ball-milled, sieved, and aged to obtain the ceramic glaze.

6. The method according to claim 5, wherein, The ball milling includes: mixing raw materials, balls, and water in a weight ratio of 1:2:(0.4-0.5) and ball milling for 16-25 minutes to obtain a glaze slurry of the ceramic glaze; and / or The sieving process includes: after passing the glaze slurry through a 325-mesh sieve, the proportion of residue should be less than or equal to 0.2%; and / or The aging time is 24 hours.

7. The method according to claim 6, wherein, The parameters of the glaze slurry after sieving are: flow rate 35-45 s / 200ml, pH 6.5-7.

6.

8. A ceramic product comprising a body and a glaze layer on the surface of the body, the glaze layer being a layer of ceramic glaze prepared by the preparation method according to any one of claims 5 to 7.

9. The ceramic product according to claim 8, wherein, The ceramic product in question is a building and sanitary ceramic product.

10. The ceramic product according to claim 9, wherein, The ceramic products are toilets, washbasins, urinals, or floor tiles.

11. A method for preparing a ceramic product according to any one of claims 8 to 10, comprising: S1. Glazing: The ceramic glaze is applied to the surface of the blank; S2. Firing: The ceramic product is obtained by drying, sintering, and cooling the glazed body.

12. The method according to claim 11, wherein, The glazing process includes: applying the ceramic glaze to the surface of the body after water replenishment by means of dipping, pouring, or spraying; wherein the glaze layer thickness is 0.6-0.8 mm; and / or The firing process includes: drying the glazed body and firing it at 1230-1280°C under an oxidizing atmosphere for 0.5-2 hours to obtain the ceramic product.

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